英语数学题（要算式）
In a group of people the ratio of the number of woman and the number of men is 11：10.The average age of the women is 34,and the average age of the men is 32.What is the average age of the group exactly?
人气：271 ℃ 时间：2020-10-01 03:34:41
解答
翻译如下：在一个团体中女男比例为11:10,女的平均年龄为34岁,男的平均年龄为32岁,问整个团体的平均年龄?
答案：（11*34+10*32）/21=32.57
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